Journal: EMBO Reports
Article Title: Patronin/CAMSAP promotes reactivation and regeneration of Drosophila quiescent neural stem cells
doi: 10.15252/embr.202256624
Figure Lengend Snippet: Time course analysis of larval brains at 36 h, 48 h, 72 h, and 96 h ALH from control, patr sk1 /patr e00176 , patr sk8 /patr e00176 , and patr sk1 /patr EY05252 were analyzed for EdU incorporation. NSCs were marked by Dpn. Quantification graph of EdU‐positive NSCs per brain lobe for genotypes in (A). 36 h ALH, Control, 6.5%, n = 11 BL; patr sk1 /patr e00176 , 38.4%, n = 11 BL, patr sk8 /patr e00176 , 67.4%, n = 10 BL and patr sk1 /patr EY05252 , 65.7%, n = 9 BL. 48 h ALH, Control, 0.9%, n = 10 BL; patr sk1 /patr e00176 , 29.3%, n = 11 BL, patr sk8 /patr e00176 , 65.5%, n = 10 BL and patr sk1 /patr EY05252 , 61.1%, n = 9 BL. 72 h ALH, Control, 0%, n = 12 BL; patr sk1 /patr e00176 , 11.5%, n = 8 BL and patr sk8 /patr e00176 , 31.1%, n = 8 BL. 96 h ALH, Control, 0%, n = 10 BL; patr sk1 /patr e00176 , 0%, n = 10 BL and patr sk8 /patr e00176 , 1.3%, n = 9 BL. Tabled analysis of EdU time‐course experiments of larval brains at 24 h, 36 h, 48 h, 72 h, and 96 h ALH from control, patr sk1 /patr sk8 , patr sk1 /patr EY05252 , patr sk1 /patr e00176 , and patr sk8 /patr e00176 . A schematic representation of full‐length and truncated Patronin domains. Patronin contains multiple domains: a calponin homology (CH) domain at the N‐terminus, three coiled‐coil (CC) repeats at the central region, and a signature CKK domain at the C‐terminus. Larval brains at 6 h ALH from control ( grh ‐Gal4/ UAS‐β‐Gal RNAi), UAS‐Patronin and UAS‐Patronin‐Venus controlled under grh ‐Gal4 were analyzed for EdU incorporation. NSCs were marked by Dpn. Quantification graph of EdU‐positive NSCs per brain lobe for genotypes in (E). Control, 28%, n = 10 BL; UAS‐Patronin , 26.7%, n = 9 BL and UAS‐Patronin‐Venus , 26.4%, n = 9 BL. Larval brains at 24 h ALH from the control ( grh ‐Gal4, UAS ‐Dcr2/ UAS‐β‐Gal RNAi), patr RNAi I (#18462 Ra‐1, NIG), and patr RNAi II (VDRC 108927KK) driven by grh‐ Gal4 were labeled with antibodies against Patronin and Dpn. Images of single quiescent NSCs from larval brains at 16 h ALH from control ( UAS ‐mCD8‐GFP; UAS ‐Dcr2/ UAS‐β‐Gal RNAi), patr RNAi I (#18462 Ra‐1, NIG) and patr RNAi II (VDRC 108927KK) driven by grh‐ Gal4 were labeled with antibodies against Patronin, Dpn and GFP. Quantification of Patronin intensity in the primary protrusion of quiescent NSCs in control ( n = 13), patr RNAi I (#18462 Ra‐1, NIG; n = 15 quiescent NSCs), and patr RNAi II (VDRC 108927KK; n = 15 quiescent NSCs) in central brain (CB) at 16 h ALH. Larval brains at 24 h ALH from the control ( yw ) and patr sk1 /patr sk8 were labeled with antibodies against Patronin and Dpn. Images of single quiescent NSCs from larval brains at 16 h ALH from control ( UAS ‐mCD8 GFP) and patr sk1 /patr sk8 driven by grh‐ Gal4 were labeled with antibodies against Patronin, Dpn, and GFP. Quantification of Patronin intensity in the primary protrusion of quiescent NSCs in control ( n = 20 quiescent NSCs) and patr sk1 /patr sk8 ( n = 32 quiescent NSCs) in central brain (CB) at 16 h ALH. Data information: EdU incorporation was analyzed at 6 h ALH by feeding larvae at 2 h ALH with food supplemented with 0.2 mM EdU for 4 h for (E‐F) and at 36 h/48 h/72 h/ 96 h ALH by feeding larvae at 32 h/44 h/68 h/92 h ALH with food supplemented with 0.2 mM EdU for 4 h for (A‐C). White arrowheads point to NSCs without EdU incorporation (A). Data are presented as mean ± SD. In (B and F), statistical significance was determined by one‐way ANOVA with multiple comparisons. Ns, non‐significant, **** P < 0.0001. Scale bars: 5 μm for single quiescent NSC (H and K) and 10 μm for whole BL (A, E, G, and J). All replicates were biological. Source data are available online for this figure.
Article Snippet: Patronin contains a calponin homology (CH) domain at its amino terminus, three predicted coiled‐coil (CC) domains at its central region, and a CAMSAP/KIAA1078/KIA1543 (CKK) domain, which is the microtubule‐binding domain, at its carboxyl‐terminus (Fig ; Baines et al , ).
Techniques: Control, Labeling